Forming of a nanostructured spectral filter
US9638844B2 · kind B2 · utility
6Cited by
11References
16Claims
0Family size
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Key dates
| Filing date | Jun 16, 2014 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Jul 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133514
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A spectral filter includes an assembly of filtering cells. Each cell has a same nanostructured pattern and a preferential direction of the pattern. This preferential direction is, for each cell, oriented approximately radially with respect to a single point of the spectral filter. Alternatively, this preferential direction is, for each cell, oriented approximately ortho-radially with respect to the single point of the spectral filter. The single point may be a center point. Alternatively, the single point may correspond to an optical axis of a lens element associated with the spectral filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.